Free tool
Prop Maker Convention Packing Checklist
Props break in transport, peace-bonding tags need zip ties, and touch-up paint saves a damaged finish. Pack transport padding, repair supplies, and display gear alongside your con essentials.
Frequently
asked questions.
Track the real numbers as you build
This calculator gives you a starting estimate. Costumary tracks your actual spending, materials, timeline, and progress across every build, all in one workspace.
Start organizing your buildsMore prop making resources
Prop Making workspace
Build journal, references, materials, and budget tracking
All free tools
Calculators, checklists, and planning tools for makers
Prop Making guides and cost breakdowns
Real prices, techniques, and time estimates from builders
Prop Making templates
Start from a pre-built prop making project template with milestones and materials
More free tools for makers
Budget Calculator
Estimate your build cost before you start. Add materials, track spending, and stay on budget from first sketch to con floor.
Commission Pricing Calculator
Figure out what to charge. Factor in materials, labor hours, complexity, and overhead so you never underprice a commission again.
Prop Scaling Calculator
Scale any weapon, staff, or accessory to your height. Input the character's canon dimensions and your measurements, get cut-ready numbers.
Spray Paint Color Matcher
Upload a reference image or paste a hex code, then find close spray paint matches for props, helmets, 3D prints, and model kits.
Convention Budget Calculator
Know what your next con will actually cost. Badge, hotel, travel, food, and shopping breakdown with per-person split for groups.
Convention Profit Tracker
Was your show worth it? Estimate break-even before a craft fair, log actual sales after, and compare which shows actually make you money.
Carousel Composer
Drop your slide templates, overlay photos on each one, crop and rotate, then export everything as a zip. Runs in your browser, nothing uploaded.